Extension Builders in Sydenham

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4 (21 reviews)

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Some of our top rated extension builders in Sydenham

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Hooper brown construction
No reviews yet
Extension Builder in Sydenham
I am a city & guilds qualified carpenter/ joiner who has more than 40 years working experience in building and refurbishing as well as my above trade
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D-Max Carpentry & Building
Rating: 5 out of 5
Extension Builder in Sydenham
We aim to please all customers with high standards of work. Setting such high standards allows us to work from recommendations.
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Latest review:
Extensions- 22 Dec 2015
Excellent builders, polite,caring reliable, we would recommend them to anyone . High standard of workmanship and job finished on time. Very clean and tidy workers. They were brilliant.
Cera Building Renovation
No reviews yet
Extension Builder in Sydenham
Our experience allows us to be efficient and effective.We specialise in Extension, Loft Conversion, Renovation, Electric, Plumbing, Kitchens, Bathrooms, Plastering and Rendering, Painting and Decorating, and this allows us to transform any part of your home into the vision you have for it and this is what gives us the passion for what we do! You can find us on Google Instagram or Facebook.
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New Vision Designs Limited
Rating: 5 out of 5
Extension Builder in Sydenham
Welcome to New Vision Designs, where craftsmanship and attention to detail converge across a spectrum of construction projects. Our proficient team excels in Residential Refurbishment, Commercial Fitout, Full Design and Build services. From METSEC and SFS installations to Drylining, Painting, Decorations, and Mechanical & Electrical (M&E) work, we deliver exceptional results. With a steadfast dedication to quality, we bring extensive expertise and proficiency to each project we undertake.
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Latest review:
Painting & Decorating- 1 Dec 2024
Jay and the team at New Vision Designs were excellent - I was able to leave house, them with keys, returning to tidy, well organised project lasting 5 days. Throughout they sent me whatsapp video updates, kept me in the loop on any milestones... so so greatful and will be using them again soon !
Planix Ltd
Rating: 5 out of 5
Extension Builder in Sydenham
Planix limited carry out all aspects of constructor but specialised in loft conversion, extensions, garage conversions and property refurbishment including kitchen and bathroom fitting.
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Latest review:
Conversions - General- 21 Oct 2021
Job done well and good solutions provided when problems were encountered
SDK Landscapes and Driveways
Rating: 5 out of 5
Extension Builder in Sydenham
We are a small family run business, I have been paving now for over 20 years. Danielle is the inspiration behind the design and my dad has had a lifetime in the building trade. we will undertake all aspects of landscaping. We pride ourselves on the quality of are work and take great satisfaction from the jobs we do for are clients.
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Latest review:
Landscaping- 27 Sep 2024
Simon, Danielle, Craig and Harry did a fantastic job for us on our new front, rear and side patio, new side gate and post, and new lean to. They interpreted our vision perfectly and used their experience to make great suggestions. We are delighted with the outcome. They are a friendly and courteous team; I would highly recommend them and would go to them first for any future quotes.
Solid Structures & Maintenance
Rating: 5 out of 5
Extension Builder in Sydenham
Solid Structures & Maintenance LTD At Solid Structures & Maintenance LTD, we pride ourselves on delivering high-quality building and refurbishment services across London and the surrounding areas. With years of hands-on experience in the construction industry, we specialise in: • Home Extensions & Loft Conversions • Full Renovations & Refurbishments • Kitchens & Bathrooms (design, supply & installation) • Roofing & Structural Works • Plastering, Flooring & Carpentry • General Maintenance & Repairs We manage projects from design to completion, offering reliable workmanship, clear communication, and a professional finish every time. Our team works to the highest standards, ensuring that every project is completed on time and within budget. ✅ Fully insured ✅ Workmanship guarantee ✅ Transparent stage payment plans ✅ Friendly, reliable team Whether you’re planning a full property refurbishment, an extension to create more space, or simply updating your interiors, Solid Structures & Maintenance LTD is here to bring your vision to life.
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Latest review:
Conversions - General- 11 Oct 2025
All good. Competent and helpful. Will be working with Andy and his men again. Highly recommended. From: The LR Group.
Maciej Sokolski
No reviews yet
Extension Builder in Sydenham
Carpenter Handy Man, Multi trade person
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Walter weir Ltd
Rating: 5 out of 5
Extension Builder in Sydenham
Walter Weir Ltd - established as a design and build contractor for the highest specification projects in residential and commercial developments in London & The South East. Our team of skilled tradesman, project managers & architects cover all scope of works within construction, who are experienced professionals, making the dream a reality for every client. We believe in cementing lasting relationships with clients & this can only be achieved by maintaining a constantly high standard of work.
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Latest review:
Groundwork & Foundations- 19 Feb 2020
Donald Weir was really professional and helpful. They got the work done and handled our queries with patience. We will be soliciting their services again very soon!
Beech construction ltd
No reviews yet
Extension Builder in Sydenham
Beech construction under take all types of construction work.
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Perfect Builders Loft and Extension ltd
No reviews yet
Extension Builder in Sydenham
Perfect Builders Loft & Extension Expert At Perfect Builders Loft & Extension Expert, we specialize in comprehensive construction services, focusing on loft conversions and extensions. With over 20 years of experience in the industry, we have honed our skills and expertise to deliver exceptional results that meet your needs. Our commitment to quality craftsmanship ensures that every project is completed to the highest standards, providing you with peace of mind and saving you time and money. We understand that building work can be stressful, which is why we prioritize clear communication and customer satisfaction throughout the entire process. Choose Perfect Builders for your next project, and let us turn your vision into reality with professionalism and dedication.
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BLE CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Sydenham
BLE stands for Best Lofts & Extensions.We are a professional building company based in South West london. BLE are specialist in loft conversion,home extensions,garage conversion,as well new builds.We also conduct any projects such plastering,brickwork and all interior and exterior works.
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Latest review:
Extensions- 16 Oct 2023
Mariusz & his team are amazing, from start to finish they have been fantastic & we cannot recommend them enough. We met with a couple of builders for quotes & felt like our project would be in good hands with Mariusz, we instantly liked him & had a good feeling. He was happy to talk through everything with us, answer our questions & nothing was a concern or a problem, this continued throughout our whole project. Communication was faultless throughout, which in our past experience is unheard of & Mariusz was on site multiple times a week. The team were polite, hard working, tidy & professional. Andrew & Pavel were the main guys on our build & they were amazing. They arrived the same time every morning & worked so hard 6 days a week. We cannot believe how quickly & professionally they carried out each stage of the build, which ensured all timelines were met. There was no cutting corners, the quality of work was excellent, with many of our neighbours coming over to comment on their craftmanship, especially the brick work. Our local council building inspector assigned to our project was satisfied & complimentary of the build throughout, no concerns were raised. Doing any size home renovation project & finding someone you can trust & rely on can be daunting. However, Mariusz & his guys really are who you hope to work with. If you are looking for a team then look no further, you will be in safe hands. It's been an amazing journey & a pleasure to work with Mariusz. Thank you
MTB Project Management Ltd
No reviews yet
Extension Builder in Sydenham
TrustBuilt Projects is a London-based building and renovation company providing reliable, high-quality construction services for both residential and commercial clients. We specialise in home renovations, extensions, loft conversions, kitchen and bathroom refurbishments, and outdoor works such as driveways, fencing, and garden landscaping. Our team also manages commercial fit-outs for restaurants, shops, and offices.we manage the entire process from start to finish. Visiting your site for a free consultation and detailed quote Coordinating skilled tradespeople (plumbers, electricians, carpenters, decorators) Purchasing materials and ensuring quality control Managing timelines, communication, and payments — all through one trusted contact With over 30 years of experience in the building trade, we combine traditional craftsmanship with modern project management to deliver dependable, professional results. We believe in transparency, fair pricing, and trust. Every job — big or small — is completed with attention to detail, safety, and customer satisfaction at its core. Whether you’re improving your home, adding new space, or renovating your business premises, TrustBuilt Projects is here to make it stress-free, and successful.
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k and l management ltd
Rating: 5 out of 5
Extension Builder in Sydenham
We are a family run company and have been trading for over 10 years. Our aim to supply top quality work on time and within budget this can be seen from our no of return clients. All work carried out is completed to the best of building practices. We are working on adding some photos of our work.
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Latest review:
Worked with Phil within a number of public sector projects all of which had to be delivered in a highly pressurized time frame with a focus on quality and sustainability. Would recommend Phil as a skillful tradesman who can work positively with his clients in a professional way whist retaining the highest integrity and drive to achieve best value and product for his customers. v. I have worked with Phil on projects valued between £2000 and £400,000 and have found his skill set, person-ability and communication skills to be of enormous value.
CRAFTSMAN CONSTRUCTION LTD
Rating: 5 out of 5
Extension Builder in Sydenham
Welcome, and thank you for choosing us for your construction needs. We want you to feel completely comfortable and at ease when speaking with us. No question is too small or too big — we are here to listen, guide you, and support you at every step of your project. Our goal is to create a peaceful, respectful, and open environment where you can freely share your ideas, concerns, and expectations. We look forward to working with you and turning your vision into reality. Please feel free to reach out anytime. We are always happy to help.
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Latest review:
Extensions- 3 Feb 2026
The job went perfectly. The Builders arrived on time and finished all the work in two days the work was completed to a perfect standard he even cleaned up some of the mess that previous Builders had left behind, their work. I can say without hesitation is exemplary. I would highly recommend hiring Craftsman Construction Limited
LOUI"S MAINTENANCE LTD
Rating: 4.9 out of 5
Extension Builder in Sydenham
we are a reliable professional small company,we provide a high quality of work at competitive price"s,we are fully insured for all the work we take on ,and we are proud of what we do ,no job to small or too big ,we do kitchen & bathrooms,plastering & tiling,wood flooring,painting & decorating ...
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Latest review:
Bathroom Fitting- 15 Oct 2024
Actually, I prefer to call him as Super Mario instead of Loui :) Initially I agreed to work with him just for our bathroom renovation project but he fixed almost everything later on. Pipe installation, plastering, painting, and installation of furnitures are just some points of this work. He made an amazing job while renovating our bathroom, I still could not believe it is ours. I just observed he was very disciplined and working vey clean. He came early 8 AM and left around 5 PM without any delay and more importantly left my property enormously clean (I wish you see my wife’s happiness), almost for a week. He then replaced my garage roof which was leaking after every rain. Fixed my rain gutters and drains. Well, he then fixed all my internal doors and garage doors which were not aligning properly. I am so happy as a customer and I am really happy with the quality of work. Thanks again Loui.

Top rated Extension Builders

Our Extension Builders in Sydenham, are rated 4 out of 5 based on 21 reviews from customers like you.

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What types of services are offered by local extension builders in Sydenham?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in Sydenham for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in Sydenham who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen Sydenham extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in Sydenham?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Sydenham will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several Sydenham extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Sydenham home extension project is likely to cost.

Find extension builders in Sydenham with MyBuilder

Hiring the right extension builder in Sydenham with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local Sydenham extension builders. Once your job is live, we’ll share it with home extension builders in Sydenham who can express their interest.

Step 2: Compare different extension builders in Sydenham

When you start receiving interest, review profiles of local Sydenham extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire Sydenham extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Sydenham, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

Sydenham extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Sydenham extension builder before hiring?

Before hiring an extension builder in Sydenham or extension building company in Sydenham, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in Sydenham?

An extension builder in Sydenham should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your Sydenham extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in Sydenham?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the Sydenham extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most Sydenham extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in Sydenham

Can an extension builder in Sydenham help with planning permission?

Yes, many extension builders in Sydenham can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in Sydenham handle everything from design to construction?

Many Sydenham extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in Sydenham help with materials and finishes?

Yes, most extension builders in Sydenham can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.